a {
   text-decoration: none;
}
.header {
    background: #f7f7f7;
}
.header__wrapper {
    height: 80px;
    width: 1200px;
    margin: auto;
    position: relative;
}
.header__logo {
    position: absolute;
    background: url("../image/logo.png") left center no-repeat;
    background-size: 38px 38px;
    width: 150px;
    height: 38px;
    font-size: 20px;
    color: #07111b;
    line-height: 38px;
    text-indent: 50px;
    top: 50%;
    margin-top: -19px;
    left: 20px;
}
.header__nav {
    right: 20px;
    height: 38px;
    position: absolute;
    top: 50%;
    margin-top: -19px;
}
.header__nav-item {
    display: block;
    height: 38px;
    width: 30px;
    text-align: center;
    line-height: 38px;
    color: #292f35;
    float: left;
    font-size: 14px;
    padding-left: 40px;
}
.header__nav-item:hover {
    color: #ff0000;
}
.header__nav-item_status_active {
    /*color: #ff0000;
    position: relative;*/
}
.header__nav-item_status_active::after {
  /*  display: block;
    position: absolute;
    margin: 0 auto;
    width: 100%;
    height: 2px;
    content: '';
    background: #ff0000;
    left: 0;
    bottom: 0;*/
}
.header__nav-item_custom_button {
    background: #000;
    color: #f4f4f5;
    text-align: center;
    line-height: 38px;
    width: 90px;
    border-radius: 3px;
    margin-left: 40px;
    padding: 0;
}
.screen-1 {
    height: 800px;
    position: relative;
    background: url("../image/bg-screen-1.png") center no-repeat;
    background-size: cover;
}
.screen-1__heading {
    font-size: 42px;
    padding-top: 156px;
    text-align: center;
    color: #ffffff;
}
.screen-1__heading a{
    color: #ff0000;

}
.screen-1__phone {
    position: absolute;
    background: url("../image/screen-1-phone.png") center no-repeat;
    width: 1375px;
    height: 305px;
    left: 50%;
    margin-left: -687px;
    bottom: 187px;
    z-index: 2;
}
.screen-1__shadow {
    position: absolute;
    background: url("../image/screen-1-shadow.png") center no-repeat;
    width: 1233px;
    height: 411px;
    left: 50%;
    margin-left: -616px;
    bottom: 30px;
    z-index: 1;
    opacity: .6;
}
.screen-2 {
    height: 800px;
    position: relative;
    background: #FAFAFA;
    overflow: hidden;
    text-align: center;
}
.screen-2__heading {
    font-size: 42px;
    padding-top: 96px;
    text-align: center;
    color: #ff0000;
}
.screen-2__heading2 {
    font-size: 16px;
    padding-top: 20px;
    text-align: center;
    color: #000;
    line-height: 28px;
}

.screen-2__phone {
    position: absolute;
    background: url("../image/bg-screen-2.png") center no-repeat;
    width: 928px;
    height: 873px;
    left: 50%;
    margin-left: -464px;
    top: 270px;
    z-index: 2;
}
.screen-2__point {
    position: absolute;
    color: #4D555d;
    font-size:24px;
    width: 100px;
}
.screen-2__point_i_1 {
    background: url("../image/icon-point-right.png") no-repeat center right;
    padding-right: 112px;
    top: 180px;
    left: -120px;
}
.screen-2__point_i_2 {
    background: url("../image/icon-point-left.png") no-repeat center left;
    padding-left: 112px;
    top: 37px;
    left: 584px;
}
.screen-2__point_i_3 {
    background: url("../image/icon-point-left.png") no-repeat center left;
    padding-left: 112px;
    top: 340px;
    left: 680px;
}
.screen-3 {
    height: 800px;
    position: relative;
    background: #a71316;
}
.screen-3__wrap {
    position: relative;
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    height: 800px;
}
.screen-3__heading {
    font-size: 36px;
    top: 90px;
    left: 10px;
    position: absolute;
    color: #ffffff;
}
.screen-3__heading2 {
    position: absolute;
    font-size: 16px;
    top: 170px;
    left: 10px;
    color: #ffffff;
    line-height: 28px;
}
.screen-3__features {
    position: absolute;
    width: 328px;
    height: 288px;
    bottom: 144px;
    left: 5px;
}
.screen-3__features-item {
    position: relative;
    float: left;
    margin: 0 20px 20px 0;
    box-sizing: content-box;
    width: 140px;
    height: 120px;
    border: 1px solid #ffffff;
    color: #ffffff;
    text-align: center;
    border-radius: 3px;
}
.screen-3__features-item-number {
    font-size: 36px;
    line-height: 36px;
    height: 36px;
    padding: 32px 0 9px 0;
}
.screen-3__features-item-desc {
    font-size: 16px;
    height: 16px;
    line-height: 16px;
}

.screen-3__phone {
    position: absolute;
    background: url("../image/bg-screen-3.png") center no-repeat;
    width: 729px;
    height: 900px;
    right: 0;
    top: 200px;
    z-index: 2;
}
.screen-4 {
    height: 800px;
    position: relative;
    background: #fff;
}
.screen-4__wrap {
    width: 1260px;
    height: 800px;
    margin: 0 auto;
    position: relative;
    text-align: center;
}
.screen-4__heading {
    position: absolute;
    font-size: 56px;
    width: 100%;
    color: #ff0000;
    top: 80px;
    margin: 0 auto;
}
.screen-4__heading2 {
    position: absolute;
    width: 100%;
    top: 180px;
    font-size: 16px;
    color: #000;
    line-height: 28px;
}
.screen-4__type {
    position: absolute;
    width: 1260px;
    height: 270px;
    bottom: 220px;
    left: 50px;
    margin: 0 auto;
}
.screen-4__type__item {
    position: relative;
    width: 220px;
    height: 270px;
    float: left;
    margin-right: 90px;
}
.screen-4__type-item_i_1 {
    background: url("../image/phone-1.png");
}
.screen-4__type-item_i_2 {
    background: url("../image/phone-2.png");
}
.screen-4__type-item_i_3 {
    background: url("../image/phone-3.png");
}
.screen-4__type-item_i_4 {
    background: url("../image/phone-4.png");
}
.screen-4__type__item__color {
    position: absolute;
    width: 100%;
    font-size: 16px;
    height: 16px;
    line-height: 16px;
    color: #2c3238;
    top: 300px;
    margin: 0 auto;
}
.screen-4__type__item__storage {
    position: absolute;
    width: 100%;
    top: 328px;
    font-size: 9px;
    height: 9px;
    line-height: 9px;
    color: #93999f;
}
.screen-5 {
    height: 800px;
    position: relative;
    background: #d9dde1;
    overflow: hidden;
}
.screen-5__wrap {
    max-width: 1200px;
    min-height: 800px;
    height: 100%;
    margin: 0 auto;
    position: relative;
    text-align: center;
    overflow: hidden;
}
.screen-5__heading2 {
    position: absolute;
    font-size: 16px;
    width: 100%;
    top: 270px;
}
.screen-5__heading {
    position: absolute;
    width: 100%;
    top: 180px;
    font-size: 46px;
    color: #f01414;
    line-height: 46px;
}
.screen-5__bg {
    position: absolute;
    height: 370px;
    width: 100%;
    background: url("../image/bg-screen-5.png") no-repeat center bottom;
    background-size:contain;
    bottom: -100px;
    overflow: hidden;
}
.screen-6 {
    height: 80px;
    padding: 120px 0;
    background: url("../image/bg-screen-buy.png") no-repeat center bottom;
    background-size: cover;
    position: relative;
    text-align: center;
}
.screen-6 button{
    display: block;
    width: 240px;
    height: 80px;
    line-height: 80px;
    background: #ff0000;
    color: #ffffff;
    font-size: 24px;
    margin: 0 auto;
    border-radius: 3px;
    cursor: pointer;
}
.screen-6 button:hover{
    transition: all 0.5s;
    box-shadow: 0 0 10px #fff;
}
.footer {
    height: 80px;
    line-height: 80px;
    color: #ffffff;
    background: #07111b;
    text-align: center;

}
.outline {
    position: fixed;
    right: 0;
    bottom: 200px;
    background: #ffffff;
    padding: 0 8px ;
    z-index: 3;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}
.outline-item {
    display: block;
    font-size: 12px;
    width: 40px;
    height: 30px;
    line-height: 30px;
    padding: 10px 3px;
    text-align: center;
    color: #93999f;
    border-top: 1px solid #eee;
}
.outline-item_status_active {
    color: #ff0000;
}
.outline-item:first-child{
    border: none;
}
.header__nav-item_status_active {
    color: #ff0000;
}